Q1 Level 7- Law of Conservation

Which law states that mass (matter) cannot be created or destroyed, only transformed?

• Law of Periodic Tables

• Law of Conservation of Mass (matter)

• Law of Compound Formations

• Law of Antoine Lovoisier

Tags

NGSS.MS-PS1-5

A physical change, like getting a haircut, follows the law of conservation because...

• You're not creating or destroying matter, only changing it

• Matter is getting destroyed when you cut it with scissors

• Matter is created when you grow new hair

• You hair is transformed into a different substance

The beaker on the right is sealed with a cork, which prevents matter from being able to go in or our of the beaker. This is called a(n)....

• Open System

• Closed System

• Chemical System

• Compound System

A chemical change like rust on a car still follows the law of conservation of mass (matter), because...

• Iron and Oxygen are created out of thin air

• Matter is destroyed when rust forms

• Iron and Oxygen combine to transform into rust

• This example breaks the law of conservation

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

The beaker on the left has an opening at the top, which allows matter to escape and move into the surrounding air. This is an example of a(n)...

• Open System

• Closed System

• Conservation System

• Compound System

Tags

NGSS.MS-PS1-2

If you open up a can of pop and leave it on the counter overnight. What will happen to it's mass if you were to measure it before and after?

• It's mass will increase because it's a closed system

• It's mass will decrease because gas escapes the open system

• It's mass will stay the same because it's a closed system

• It's mass will stay the same because it's an open system

Tags

NGSS.MS-PS1-2

You weigh a piece of paper, then rip it into pieces, and then weigh all the pieces together on the scale. What will you find about the change in mass?

• Mass will decrease because the smaller pieces add up to less

• Mass will increase because the pieces will add up to more

• Mass stays the same because a physical change has the same matter

• This example doesn't follow the law of conservation

Tags

NGSS.MS-PS1-5

Crushing a can is an example of a(n)...

• Physical Change

• Chemical Change

• Powerful Change

• Compound Change

Tags

NGSS.MS-PS1-2

Lighting a match is an example of a(n)...

• Physical Change

• Chemical Change

• Dangerous Change

• Element Change

Tags

NGSS.MS-PS1-2

Eating food is an example that includes chewing food, and digesting food in your stomach. This is an example of a(n)...

• Physical Change only

• Chemical Change only

• Physical and Chemical Change

• Neither physical or chemical

Tags

NGSS.MS-LS1-7

NGSS.MS-PS1-2